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  1. Arial photograph of large smoke plume in the distance

    Wildfires Cause Ozone Pollution to Violate Health Standards, New Study Shows

    Wildfires can boost ozone pollution to levels that violate U.S. health standards, a new study concludes.

    • Air Quality

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  2. Ozone and the “weekend effect”

    Research from MIRAGE (Megacities Impacts on Regional and Global Environments), a field campaign held in Mexico City in 2006, is coming to fruition as scientists begin to publish their findings. A new paper details the ozone “weekend effect” in Mexico City and its implications for local air pollution.

    • Air Quality

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  3. Photograph of Alex Guenther looking at an instrument attached to a pine tree

    International field campaign examines impact of beetle kill on Rocky Mountain weather and air quality

    Mountain pine beetles appear to be doing more than killing large swaths of forests in the Rocky Mountains. Scientists suspect they are also altering local weather patterns and air quality.

    • Air Quality,
    • Weather

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  4. Photograph of a tower against a blue sky and tree branches in the foreground

    Plants in forest emit aspirin chemical to deal with stress; discovery may help agriculture

    Plants in a forest respond to stress by producing significant amounts of a chemical form of aspirin, scientists have discovered.

    • Air Quality

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  5. Photograph of a sunset over a city and highways

    Summer Olympics Tip Sheet: NCAR Scientists Available to Discuss Weather Modification, Air Quality, and Forecasting in Beijing

    In an attempt to create a favorable environment for this summer's Olympic Games in Beijing, Chinese officials hope to influence local weather conditions and air quality.

    • Air Quality,
    • Weather

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